Lens for led

Abstract

Disclosed is a lens for a light emitting diode (LED) of a vehicle. The lens includes an incident surface, into which light of the LED is incident; an emission surface, from which the light of the LED incident through the incident surface is emitted; and a plurality of lateral surfaces which is positioned between the incident surface and the emission surface. Either of the incident surface and the emission surface can includes a Y-axis light blurring region at one side of the incident surface and the emission surface. The Y-axis light blurring region blurs the light from LED in a Y-axis that is perpendicular to the optical axis of the lens.

What is claimed is: 
     
         1 . A lens for a light emitting diode (LED), comprising:
 an incident surface configured to receive light beams from the LED;   an emission surface configured to emit at least part of the light beams received at the incident surface; and   a plurality of lateral surfaces interposed between the incident surface and emission surface,   wherein a Y-axis light blurring region configured to blur at least part of the light beams in a Y-axis direction perpendicular to an optical axis of the lens is provided on the incident surface or the emission surface.   
     
     
         2 . The lens of  claim 1 , wherein the plurality of lateral surfaces includes at least four cut surfaces by cutting predetermined portions of the incident surface and the emission surface. 
     
     
         3 . The lens of  claim 1 , wherein the Y-axis light blurring region is positioned in a predetermined upper portion based on a center point of each of the incident surface and the emission surface. 
     
     
         4 . The lens of  claim 3 , wherein the Y-axis light blurring region has a different curvature radius, a different conic constant, and a different aspheric coefficient from the incident surface and the emission surface. 
     
     
         5 . The lens of  claim 1 , wherein the incident surface and the emission surface have convex shapes in opposite directions facing each other. 
     
     
         6 . The lens of  claim 5 , wherein the incident surface has a shape protruding from a center toward the LED in the Y-axis direction. 
     
     
         7 . A lens for a light emitting diode (LED), comprising:
 an incident surface configured to receive light beams from the LED;   an emission surface configured to emit at least part of the light beams received at the incident surface; and   a lateral surface interposed between the incident surface and the emission surface, a shield abutting a predetermined portion of the emission surface and configured to block at least part of the light beams, and   wherein a Y-axis light blurring region configured to blur at least part of the light beams in a Y-axis direction perpendicular to an optical axis of the lens is provided on the incident surface or the emission surface.   
     
     
         8 . The lens of  claim 7 , wherein the predetermined portion is formed at each of the upper, lower, left, and right sides of the emission surface. 
     
     
         9 . The lens of  claim 7 , wherein the Y-axis light blurring region is positioned in a predetermined upper portion based on a center point of each of the incident surface and the emission surface. 
     
     
         10 . The lens of  claim 9 , wherein the Y-axis light blurring region has a different curvature radius, a different conic constant, and a different aspheric coefficient from the incident surface and the emission surface. 
     
     
         11 . The lens of  claim 7 , wherein the incident surface and the emission surface have convex shapes in opposite directions facing each other. 
     
     
         12 . The lens of  claim 11 , wherein the incident surface has a shape protruding from a center toward the LED in the Y-axis direction.